Non-heat-conducting covering



(No Model W. H. NORRIS. NON HEAT CONDUCTING COVERING.

No. 488,248. Patented Dec. 20, 1892.

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UuTTnn STATns PATENT Trice.

\VILLIAM H. NORRIS, OF SPOKANE, WASHINGTON.

NON HEAT-CONDUCTING COVERING.

SPECIFICATION forming part of Letters Patent No. 488,248, dated December20, 1892.

Application filed January 6, 1892. Serial No. 417,172. (No model.\

To aZZ whom, it may concern.-

Be it known that I, WVILLIAM H. NORRIS, a citizen of the United States,residing at Spokane, in the county of Spokane and State of l/Vashington,have invented certain new and useful Improvements in Felt Paper Coveringfor Steam-Heating Pipes; and I do declare the following to be a full,clear, and exact description of the invention,such as Will enable othersskilled in the art to which it appertains to make and use the same.

My invention has relation to improvements in non-heat conductingcoverings for steam pipes, boilers, and other conduits and receptaclesthat are subjected to a high heat, and it has forits general object toprovide a highly efficient covering, of a cheap and simple construction,and one embodying materials that are cheap and readily obtainable.

With the foregoing end in View, the novelty of theinvention will befully understood from the following description and claims when taken inconnection with the annexed drawings, in which:

Figure 1, is a side elevation of a section of my improved covering in apartly opened position upon a steam or other pipe. Fig. 2, is atransverse section taken in the plane iudicated by the line as, x, ofFig. 1, looking toward the end of the section. Fig. 3, is a transversesection of the sectional cylindrical jacket. Fig. 4, is an end elevationof one of the end collars removed. Fig. 5, is a plan View of the same.Fig. 6, is an end elevation of the middle collar. Fig. 7, is a plan viewof the same. Fig. 8, is an elevation of one of the intermediate collarsdesigned to be placed at points between the middle and end collars. Fig.9, is a plan View of the same, and Fig. 10, is a transverse sectiontaken in the plane indicated by the line 00, at, of Fig. 1, with thecasing and the end collar closed upon the p p In the said drawings,similar letters indicate corresponding parts throughout the severalViews, referring to which A, indicates a steam pipe or other heatconducting conduit; and B,indicates the cylindrical jacket of myimproved covering, which comprises an inner layer a, of asbestus, orother non-conducting substance, an intermediate layer of manifolded feltpaper I), andan outer layer 6, of canvas. This jacket B, is formed intotwo semi-circular, and flexibly connected sections, by cutting throughthe layer of asbestus and manifolded felt paper to the outer layer ofcan vas; and thelayer of canvas'of one section is extended beyond thefree edge thereofas shown at c, and is adapted to be connected to theother section by glue or the like to secure the sections together and inposition upon the pipe.

0, indicates the middle collar of the covering for holding the jacket B,away from the pipe. This collar (J, which occupies a position as shownin Fig. l, is formedby tlutinga strip of sheet metal and bending thesame into a circular form, and lapping its ends as better shown in Fig.6, of the drawing.

D, indicate the intermediate collars which are designed to assist themiddle collar 0, in holding the jacket B, away from the pipe. Thesecollars D, which are not subjected to as great a strain as the collar 0,as they occupy the intermediate position illustrated, are respectivelyformed from a fluted wire which is bent into a circular form and has itsends lapped as better illustrated in Fig.8.

The end collars M, of my improved 'covering which are better illustratedin Figs. tand 5, of the drawings, are preferably formed respectivelyfrom a strip of fluted sheet metal bent to form a circle and having itsedges resting contiguous to each other as illustrated. Struck up fromthe collars M, and preferably at diametrically opposite points midwaythe length thereof, are the wings E,

which are designed and adapted to engage,

the ends of the jacket B, and prevent the collars from entering the samea greater distance than about that illustrated.

Interposed between the end collars M, and the pipe A, as betterillustrated in Fig. 10, of the drawings, are fillings F, of asbestus,mortar, or the like, whereby a dead air space is created within thecovering between the end collars M, which is a highly importantdesideratum. W

By reason of the contiguous ends of the collars O, D, and M, beingsimply lapped or brought adjacent to each other. it will be readilyperceived that they are free to expand and contract, which is also animportant desideratum.

From the foregoing description read in connection with the drawings itwill be perceived that I have provided a covering of a cheap and simpleconstruction adapted to carryout its functions in an efficient manner.

Having described my invention what I claim is:

1. In a non-heat conducting covering for steam pipes, substantially asdescribed, the combination with a jacket; of the end collars M, formedby bending fluted sheets of metal into circles; the said collars havingtheir ends loosely lapped and also having the struck up wings E, adaptedto engage the ends of the acket; and the non-conducting fillingsinterposed between the end collars and the pipe on which the covering ismounted adapted to create a dead air space Within the jacket between theend collars, substantially as and for the purpose set forth.

2. In a non-heat conducting covering for steam pipes and the like, thecombination with a jacket comprising two longitudinal sections flexiblyconnected together, the middle collar 0, formed from a sheet of flutedmetal and the intermediate collars D, formed from fluted wire,interposed between the jacket and the pipe upon which it is mounted; ofthe end collars M, formed by bending fluted sheets of metal intocircles; the said collars having their ends loosely lapped and alsohaving the struck up wings E, adapted to engage the ends of the jacket;and the nonconducting fillings interposed between the end collars andthe pipe on which the covering is mounted adapted to create a dead airspace within the jacket between the end collars, substantially as andfor the purpose set forth.

In testimony whereof I affixmysignature in presence of two witnesses.

IVILLIAM H. NORRIS.

WVitnesses:

S. P. DOMER, F. L. ALGER.

